Katherine is an average twenty-something with all the usual stress and anxiety: school; money; her soul-crushing job. But something else plagues her. It is as if something is lurking...inside her.
Strange hallucinations, slips of reality, and dangerous urges drive her to the edge of sanity. No one believes her, from doctors to her own closest friends, and as she begins to research, a horrific answer looms closer than she can expect.
